Air valve



April 21, 1931. J. H. BROOKS Filed May 16, 1929 2 Sheets-Sheet l April 21, 1931. BROOKS 1,801,717

' AIR-VALVE Filed May 16, 1929 2 Sheets-Sheet 2 Inventor win 15 3700275 A iiomey Patented Apr. 21, 1931 V UNITED STATES PATENT OFFICE JOHN H. BROOKS, OF MUSKEGON, MICHIGAN A R VALVE Application filed May 1c, 1929. SeriaLNo. 363,628

any. form of packing for the valve member.

Another salient object of the invention is v to provide a valve for distributing compressed fluid wherein the valve element is tensionally maintained in an equalized position.

After considering the following specification and claim,-other important objects and advantages of this invention will readily be come apparent.

In the drawings:

Figure 1 represents a side elevation of an air expansible chamber shown equipped with the novel valve structure.

Figure 2 represents a vertical sectional view of the valve structure taken substantially on the line 22 of Figure 1.

Figure 3 is a vertical sectional view, taken substantially on the line 33 of Figure 2.

Figure 4 represents an inside elevation of one section of the valve body. 7

Figure 5 represents a vertical sectional view through the valve body section shown in Figure 4 and being taken substantially on the line 55 of Figure 4:. i

Figure 6 is a side elevation of the rotary Valve element.

Figure 7 is an end elevation of the valve element looking. toward its enlarged end,

Referring to the drawings wherein like numerals designate like parts, Figure '1 shows a vertically disposed cylinder ,3, closed at its ends by header plates 4- These plates are tightly secured to the ends of the cylinder 3 by interconnecting tie rods 5. A piston 6 is operable within the cylinder 3 and is suitably secured to a rod 7 which is slidably disposed through a packing gland 8, depending below the lower header place 4:.

The novel valve structure is generally referred to by numeral 9 and the body portion;

thereof consists of a pair of sections 9 and adapted to be connected together by bolts The body section 9 consists in construction of an annular plate 12, merging at its central portion into a tapering protuberance 13, the

outer reduced end portion of which merges 1nto a cylindrlcal extenslon '14. The inner face of the annular plate 12 is provided with a concentrically disposed-rib 15. The inner surface of the conical portion 13 as well as the inner surfaces of the plate 12 and rib 15 form an inwardly flaring valve seat 16. The inner side of the plate 12 is provided with upper and lower a'rcuate shape-d pockets 2 17 and 18. These pockets have openings 19 and 20 which open on the surface of the seat 16.- An inlet opening 21 of arcuate formation has a duct 22 leading therefrom and opening through the surface of the seat 6.

The section 10 of the valve body is provided with four equi-distantly spaced internally threaded nipples 23, 24;, 25, and 26,

which are radially disposed from the periphery thereof. Each of'the nipples communia cateswith an arcuate channel 27. on the inner side of the. section. Thechannel'27 with which the inlet nipple 25 communicates is relatively deep and more elongated than the other channels. structedto provide aipocket 28 at the central The section 10 is also conportion of its inner side to accommodate the reduced extending portion 29 of the rotary v valve plug generally referred toby 30.

The valve plug consists in construction of a conical intermediate portion 31, reduced at 32, and merging at its reduced end into an elongated cylindrical shank 33. The conical intermediate portionl31'of the valve element hasa 'circumferentially extending cutout portion 34; and a second'circumferentially extending cut out portion 35 at a diametrically opposite portion thereon. An opening 36 opens the cut-out portion 35 through the enlarged end of the conical portion 31. The

opening'36 is arcuate and is of the same eX- tent as the cut-away portion 35 as is apparent from the perusalof Figure 7. A finger 37 projects longitudinally from the enlarged end of theconical portion 31 at the periphery of the reduced extension 29. This finger is of triangular cross section and has one edge portion disposed radially with respect to the reduced extension 29.

The valve assembled in position has an air inlet pipe 38 connected to the nipple 25, while an air exhaust pipe 39 leads from the nipple 23 at the diametrically opposite side of the valve body. An arm- 40 is secured at its intermediacy to the shank 33 of the valve element 30 and has its respective ends connected by springs 414'1.toa suitable clamp 42 on one of the guy rods 5, for the obvious purpose of equalizing the position of the valve element 30. The shank portion 33 is provided with a longitudinally extending bore 33 which connectswith a, cross bore 34 opening at its ends on the reduced portion 32 of the valve 30, while the opposite end of the bore 33. opens into a threaded socket 45, which is adapted to receive a suitable lubricating fitting. Pull members 46 are attached to the ends of the arm 40, in the manner clearlyshown in Figure 1. A pipe 47 extends from the nipple 2-1 to the upper end of the cylinder 3, while a pipe 48 extends from the nipple 26 to communicate with the cylinder 3 at its lower end..

It will thus be seen that normally the compressed fluid. will enter the nipple .25 and channel 27 from where it passes into the pocket 28 at the inner side of the body section 10. This Will exert a constant pressure against the valve element 30 tending to normally maintain the same snugly seated against the seat 16 0f the complementary body section 9-. When thevalve elementis swung clockwise or counter-clockwise, the cut away portion 34 of the valve will communicate the channel 27 of the inlet nipple 25 with the channel 27 of either the nipple 24: or 26*, so that air may be delivered to either the upper end or lower end of the cylinder 3.

The foregoing description has been couched in definite terms, but it is to be understood that while this is so, various changes in the specific, shape, size and material may be resorted to, without departing from the spirit and scope of the invention as claimed hereinafter.

What is claimed as new is:

A compressed air distributing valve comprising a sectional valve casing, one section of which consists of an annular plate merging at its central portion into a tubular conical protuberance terminating at its inner end in a cylindrical extension, the inner surface of the. plate and conical portion forming a flared valve seat, said plate having a concentrically disposed. rib on its inner face, and a plurality of circumferentially spaced arcuate pockets having ducts opening through the surface of the valve seat, the other section of the casing consisting of a relatively thick circular plate disposed against the inner face of the annular plate and: presenting a central recess forming a continuation of the flaring valve seat, the outer edge of the wall of the recess being shouldered to engage over the said rib of the annular plate, said other section having a plurality of equi-distantly spaced nipples radially disposed from the periphery thereof, and an arcuate channel communicating with each nipple, one of said channels being deeper and more elongated than the other and opening into the said central recess, the other channels opening outwardly through the inner face of the section in communication with corresponding arcuate pockets of the annular plate, a conical valve plug engaged in the flaring valve seat and havingat one end a cylindrical shank extending through the cylindrical extension of'the annular plate, and at the other end the reduced circular extension engaging in the communication between adjacent pairs of ducts, and an arm centrally mounted on the shank of the valve plug, and tensioning means at each end of the arm for equalizing the position of the valve plug.

Intestimony whereof I. affix my signature.

JOHN H. BROOKS. 

